Fiberoptic esophagoscopic examination of the cardia and upper stomach.
D001706:Biopsy; D002299:Cardia; D004935:Esophageal Diseases / Q000175:diagnosis*; D004945:Esophagoscopy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D013272:Stomach Diseases / Q000175:diagnosis*